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You can disable the intel p state driver by adding an additional kernel parameter through your bootloader. |
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For GRUB2 you can do the following: |
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/etc/default/grub: |
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GRUB_CMDLINE_LINUX="intel_pstate=disable" |
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terminal: |
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sudo grub-mkconfig -o /boot/grub/grub.cfg |
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sudo reboot |
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After that, the other governors should be available, too. |
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-Ramon |
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On 11/01/2017 04:12 AM, Walter Dnes wrote: |
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I've cobbled together a script that runs under eselect to list/set |
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COU speeds/governors on my machines. I set max speed when I'm using |
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the machine, and min speed when not. It has run fine so far, except |
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recently on an Intel Silvermont machine (64-bit Atom family) running |
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Gentoo kernel 4.12.12. Userspace CPU control is not available, even |
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though I've asked for it under "make menuconfig". On other machines |
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/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors |
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shows... |
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conservative userspace ondemand performance |
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...but on this one machine it only shows... |
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performance powersave |
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...so I know it's the machine, not my script, that's the problem. Note |
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that I set conservative, performance, powersave, and userspace in the |
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"make menuconfig" process, and made userspace the default governor. One |
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difference I noticed on the Silvermont is CONFIG_X86_INTEL_PSTATE=y |
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which is the opposite of the machines that things work properly on. So |
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I went into "make menuconfig" to try to switch it off, but I get... |
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-*- Intel P state control |
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Yes, it is *FORCED* on on that one machine. Now what? I'm attaching |
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/proc/config.gz from the Silvermont in case it helps. Feel free to |
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comment on other stuff in config.gz as well. |
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